I suggest try uninstalling Logbook Pro then download the full build of 1.9.7 from the download link on the left and install the full build to see if that resolves your issue. If not, please e-mail your backup (.BAK) file to firstname.lastname@example.org or if you don't have a recent backup, find your data file (ends with .LBK) and ZIP compress it and e-mail the ZIP file for review. But first, try the uninstall/reboot/reinstall and see if that resolves your issue.
I uninstalled logbook pro and clicked on download from the website. I am not sure what you meant about the full build of the download so I assumed you meant click on the download button and not the four individual ones below it. After doing that logbook pro will not come up. I think I succesfully emailed you the backup.
So you do see a Logbook Pro icon in the Windows Task Bar (bottom of your screen)? And if so, when you right-click and choose Maximize nothing happens? Okay, contact email@example.com and let's take a few other steps to handle this offline.